论文标题
中微子天文学作为标准模型以外的物理探针：sub-mev $ b $ - $ l $ l $ gauge boson暗物质的衰减
Neutrino astronomy as a probe of physics beyond the Standard Model: decay of sub-MeV $B$-$L$ gauge boson dark matter
论文作者
论文摘要
$ u（1）_ {b \ textrm { - } l} $对称性是Seesaw机制中的必不可少的组成部分和瘦素发生，自然配备了大量的玻色子。如果该量规玻色孔是暗物质，则与Seesaw机制一致的场景预测量规耦合的顺序为$ \ MATHCAL {O}（10^{ - 19}）$，用于群众$ \ sillessim1 $ Mev，占主动中性的衰减。我们强调并探讨了从$ \ Mathcal {o}（1）$ keV到$ \ sim1 $ meV在测试良好动机的$ b $ - $ l $ - $ l $对称扩展方面，能量的天体中微子的重要作用，该$ \ sim1 $ meV在迄今为止的文献中已经错过了。与其他暗物质模型相比，子MEV能量范围中的中微子通量是我们的设置中的独特预测，一旦被发现，它将用作烟枪的烟枪，用于存在这种$ b $ -l $ l $ l $ gauge boson及其作为暗物质粒子的作用，为解决宇宙学和天文学的Conundra打开了新的窗口。
The $U(1)_{B\textrm{--}L}$ symmetry, the essential component in the seesaw mechanism and leptogenesis, is naturally equipped with a massive gauge boson. If this gauge boson is the dark matter, the scenario consistent with the seesaw mechanism predicts the gauge coupling to be of the order of $\mathcal{O}(10^{-19})$ for masses $\lesssim1$ MeV, dominantly decaying into active neutrinos. We stress and explore the important role of astrophysical neutrinos of energies from $\mathcal{O}(1)$ keV to $\sim1$ MeV in testing the well-motivated $B$-$L$ symmetry extension to the Standard Model, which has been missed in the literature to date. Compared to other dark matter models, the neutrino flux in the sub-MeV energy range is a unique prediction in our setup and, once detected, would serve as a smoking gun for the existence of this $B$-$L$ gauge boson and its role as the dark matter particle, opening new windows to tackle cosmological and astrophysical conundra.
